%A Van Chau Dinh %A Van Thuong Dinh %A Nam Nhat Hoang %A Thi Hang Nguyen %T Application of Bond Valence Method to Estimate the Valence Charge Distribution in the Metal-to-Oxygen Bonding Spheres in Perovskites %C Ho Chi Minh city, Vietnam %D 2015 %L SisLab1277